Five-Minute Check (over Lesson 4–1)

Then/Now

New Vocabulary

Example 1: Write an Equation Given the Slope and a Point

Example 2: Write an Equation Given Two Points

Example 3: Real-World Example: Use Slope-Intercept Form

Example 4: Real-World Example: Predict from Slope-Intercept Form

Over Lesson 4–1

A. y = 3x + 1

B. y = 3x – 1

C. y = –x + 3

D. y = x – 3

Write an equation of the line with the given slope and y-intercept. slope: 3, y-intercept: –1

Over Lesson 4–1

A.

B.

C.

D.

Write an equation of the line with the given slope and y-intercept.

Over Lesson 4–1

Which is the graph of the equation y = 3x + 1?

A. B.

C. D.

Over Lesson 4–1

Which is the graph of the equation 2y – 3x = 6?

A. B.

C. D.

Over Lesson 4–1

A. 3y = –2x + 9

B. 3y = x – 12

C. –3y = x – 12

D. 4y = –3x + 8

Which of the following equations has a slope of ? 1

3

You graphed lines given the slope and the

y-intercept. (Lesson 4–1)

• Write an equation of a line in slope-intercept form given the slope and one point.

• Write an equation of a line in slope-intercept form given two points.

Write an Equation Given the Slope and a Point

Write an equation of a line that passes through

(2, –3) with a slope of

A. y = –3x + 4

B. y = –3x + 1

C. y = –3x + 13

D. y = –3x + 7

Write an equation of a line that passes through (1, 4) and has a slope of –3.

Write an Equation Given Two Points

A. Write the equation of the line that passes through (–3, –4) and (–2, –8).

Write an Equation Given Two Points

B. Write the equation of the line that passes through (6, –2) and (3, 4).